1997 EFI Flame arrestor removal

[Capt.Will]

Is this removable without also removing the exhaust? It seems the flame arresting material is glued into the inner and outer shell. My intention is to clean the flame arresting material. Anyone know the procedure or solution here?

 

[rumrunner]

Hey Capt. Will,
Best thig to do here is remove the exhaust riser and flex the exhaust hose out of the way. You need the clearance to back out the screws of the flame arrestor. The flame arrestor comes off as an assembly. Pull the flame arrestor and clean real good with Carb Cleaner, reinstall.

You will need to replace the riser gaskets at this time as well. It’s not that big of job.

 

[rumrunner]

Use the Mercury Marine "Graphite" Gaskets as mentioned in another thread.

 

[Sublimetime]

For the raw water cooled and the 1/2 fresh 1/2 raw water cooled boats it is a much quicker job because you don't have to deal with draining and collecting of the anti freeze side of manifolds.

 

[Lakeside Attraction Ohio]

Capt. Will:
I have a similar setup. To clean my flame arrestors, I spray carb cleaner on the flame arrestor while it is bolted in place while motors are running 1500rpm. Keeps them clean.

 

[Capt.Will]

Darn it. Was hoping you guys wouldn’t say that I had to removed the riser. But, it figures. Mercury, you suck. Thanks for all the information everyone.

 

[RollerCoastr]

Darn it. Was hoping you guys wouldn’t say that I had to removed the riser. But, it figures. Mercury, you suck. Thanks for all the information everyone.

The worst part about the job is the anger about Mercenjineerin' that it creates. Ditto for the raw water pump. I find that job goes better when I imagine that the water hoses are a Mercenjineerer's neck.

It also helps when Crusader and VP owners keep a 300' distance until the job is done.

 

[scoflaw]

That arrester doesn't collect dirt it's not an air cleaner. What was mentioned in post 5 works, unless you like taking things apart.

 

[Stee6043]

Pure pain. These same engines two years newer did not have this design "feature". The arrestors came right off.

Score another one for the diesel crowd. I bet they don't need to remove their exhaust to clean the filters on their turbos

 

[370Dancer]

Darn it. Was hoping you guys wouldn’t say that I had to removed the riser. But, it figures. Mercury, you suck. Thanks for all the information everyone.

I do it backwards. I remove the exhaust hose, or lift the intake manifold. Usually I'm doing something else too, like injectors, or IAC.